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PowerPC floating point little-endian [7 of 15]
- From: Alan Modra <amodra at gmail dot com>
- To: libc-alpha at sourceware dot org
- Date: Wed, 10 Jul 2013 10:58:28 +0930
- Subject: PowerPC floating point little-endian [7 of 15]
- References: <20130710012435 dot GN2602 at bubble dot grove dot modra dot org>
More little-endian fixes.
2013-07-10 Anton Blanchard <anton@au1.ibm.com>
* sysdeps/powerpc/bits/mathinline.h (__signbitf): Use builtin.
(__signbit): Likewise. Correct for little-endian.
(__signbitl): Call __signbit.
(lrint): Correct for little-endian.
(lrintf): Call lrint.
diff --git a/sysdeps/powerpc/bits/mathinline.h b/sysdeps/powerpc/bits/mathinline.h
index 140fff0..4101fbb 100644
--- a/sysdeps/powerpc/bits/mathinline.h
+++ b/sysdeps/powerpc/bits/mathinline.h
@@ -61,21 +61,28 @@
__MATH_INLINE int
__NTH (__signbitf (float __x))
{
+#if !__GNUC_PREREQ (4, 0)
__extension__ union { float __f; int __i; } __u = { __f: __x };
return __u.__i < 0;
+#else
+ return __builtin_signbitf (__x);
+#endif
}
__MATH_INLINE int
__NTH (__signbit (double __x))
{
- __extension__ union { double __d; int __i[2]; } __u = { __d: __x };
- return __u.__i[0] < 0;
+#if !__GNUC_PREREQ (4, 0)
+ __extension__ union { double __d; long long __i; } __u = { __d: __x };
+ return __u.__i < 0;
+#else
+ return __builtin_signbit (__x);
+#endif
}
# ifdef __LONG_DOUBLE_128__
__MATH_INLINE int
__NTH (__signbitl (long double __x))
{
- __extension__ union { long double __d; int __i[4]; } __u = { __d: __x };
- return __u.__i[0] < 0;
+ return __signbit ((double) __x);
}
# endif
# endif
@@ -92,22 +99,17 @@ __NTH (lrint (double __x))
{
union {
double __d;
- int __ll[2];
+ long long __ll;
} __u;
__asm__ ("fctiw %0,%1" : "=f"(__u.__d) : "f"(__x));
- return __u.__ll[1];
+ return __u.__ll;
}
__MATH_INLINE long int lrintf (float __x) __THROW;
__MATH_INLINE long int
__NTH (lrintf (float __x))
{
- union {
- double __d;
- int __ll[2];
- } __u;
- __asm__ ("fctiw %0,%1" : "=f"(__u.__d) : "f"(__x));
- return __u.__ll[1];
+ return lrint ((double) __x);
}
# endif
--
Alan Modra
Australia Development Lab, IBM